1. Department of Paediatrics and Child Health, School of Clinical Medicine, University of KwaZulu-Natal, Durban, South Africa,
2. Department of Respiratory Medicine, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom
3. Department of Medicine, University of Cambridge, Cambridge, United Kingdom,
4. Makerere University Lung Institute, Makerere College of Health Sciences, Kampala, Uganda,
5. Division of Epidemiology and Biostatistics, University of Cape Town, Cape Town, South Africa,
6. Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, United Kingdom,
7. Centre for Respiratory Disease Research, Kenya Medical Research Institute, Nairobi, Kenya,
8. Department of Medicine, Therapeutics, Dermatology and Psychiatry, Kenyatta University, Nairobi, Kenya,